In the experiment by Jacob, Monod, and Pardee, it was demonstrated that bacteria with a mutant lacz gene that were transformed with a plasmid encoding a functional lacz gene and lac operon were restored to normal repression of the lac operon in the absence of lactose. If their data showed that merozygote strains not receiving lactose still produced β-galactosidase, what might their conclusions have been

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

What tissue type has polarity and is avascular? what tissue type has polarity and is avascular? a. muscle b. connective tissue c. nervous tissue d. epithelium